davids



J, B. D AVIDS. Mucilage-Brush.

No. 226,500. Patented April is; 1880.,

c u m a m H s A w H P m G O n n J 0 1 o n P s a 1 H F N UNITED STATES PATENT OF ICE.

JOHN B. DAVIDS, OF NEW YORK, N. Y.

MUCILAGE-BRUSH.

SPECIFICATION forming part of Letters Patent No. 226,500, dated April 13, 1880.

Application filed January 19, 1880.

' portant Improvements in Brushes, of which the following is a specification.

The invention may be used for various other purposes, but is more especially intended for use as a marking-brush in stores, manufactories, and the like, for marking parcels with a thick colored fluid, or for working with gum or mucilage as a means for producing adhe sion. A fountain connected with the brush, preferably elastic, contains the fluid or semifiuid material, which I will henceforward call mucilage, and which is delivered therefrom into the interior of the brush by a central passage.

My invention relates to the construction of this portion, the portion through which the mucilage is received, and the immediately adjacent and surrounding; parts. I employ two concentric tubes of metal, confining the roots of the bristles between them, and join both strongly to the metal cap which serves as the cover to the mucilage-bottle.

My invention consists in the combination, with an elastic bulb and a handle, of brush material held between two concentric tubes. This serves as a strong, durable, and successful brush, insuring an ample passage for the fluid to rise from the bottle into the bulb, and also to descend again from the bulb into the brush material as it is pressed out.

It also consists in a peculiar method of construction by which the brush-handle and the concentric tubes are made in one with the removable cap which fits over the mouth of the mucilage-bottle.

The device possesses marked advantages over any before known to me. The mucilage cannot dry up and thicken within the brush or clog the tube. The arrangement insures a constant working condition, and the strong union with the bottle-cap avoids the difficulties to which loose and adjustable connections are subject.

I provide a bottle so adapted to the brush that no adjustment up and down is required.

The accompanying drawings form a part of this specification.

Figure 1 is a vertical section through a cap for a mucilage-bottle with my invention applied. A portion also of the rubber bulb which draws up, retains, and forces down the mucilage, is shown. The other figures show earlier stages of the construction. Fig. 2 shows the brush material loosely retained between the two tubes before applying either tube to the cap. Fig. 3 shows the material and the tubes, with inner tube alone joined to the cap.

Similar letters of reference indicate corresponding parts in all the figures.

A is the cap, of soft metal or other suitable metal, adapted to match on and serve as a cover for a mucilage-bottle. (Not shown.) It is formed with the descending rim A and with the ascending tube a, as shown, the latter adapted to engage with the rubber bulb B, SBIVlDg (IS a IGSBI'VOII.

The fibrous material of the brush is marked D. It may be made of various kinds of hair, manila, or the like, but I prefer bristles, and will so describe it.

The material D is held in the annular space between two tubes, G H, protruding below, to be of service there, and being held strongly compressed at the butts or upper portion, which is embraced between the tubes. Both tubes may, by suitable devices, be soldered to the cap A. I deem it sufiicient to simply fit the inner one tightly and to solder the outer one only.

The drawings show what I esteem the best form and proportions. Both the tubes G and H are tapered to about an equal extent, the inner one a little the most, to allow for the quantity of bristles D being held at the lower end in a ring of smaller diameter, and consequentl y being thicker. The intent is to hold the bristles with absolute firmness throughout the whole length of the tubes Gr H. The inner tube is continued a little farther down than the outer, and below this the tfiistles are left entirely free, except as (patrolled by their own stiflness. 1;

To apply the parts/together I assemble the bristles loosely in the proper annular condition between the/tubes, but with the inner tube, G, much out of position endwise, as shown in Fig. 2. Thus conditioned, I fit the upper end of the tube Gr tightly to the nozzle A which depends from the center of A, which may be done by firmly pressing the nicelyformed taper surfaces together by hand or by machinery, and afterward, by a suitable clamp (not shown) worked by a lever or other means of applying force by hand or otherwise, force the outer tube, and with it the bristles, up until the whole are firmly in contact with the plain under surface of the cap A.

In molding or otherwise producing the cap, I form, in addition to all the other parts described, a hanging lip, A at a suitable distance from the nozzle A This distance must be sufficient to allow the tube H and the bristles to be moved up readily. So soon as they are in place, and while firmly held there, the exterior of the tube H is joined to the interior of the lip A by solder m. I can use ordinary solder dextcrously applied, but prefer What is known as cold solder.

It will be observed that the lower edges of the inner tube and the outer tube do not coincide. If they coincide the natural swell of the bristles, as soon as they escape from the confinement of the tubes, will swell them ininwardly and outwardly alike, and the inward swell of the bristles would close them across the small internal space and cause thebrush to clog. By my construction of brush this difficulty is avoided. The inner tube protrudes so far below the outer one that the bristles are released from their exterior confinement before they reach the lower end of the inner tube, and on protruding beyond the inner tube there is little or no tendency to swell inward. All the swell is outward, and a clear space is provided for the fluid to flow up and down in the middle.

Modifications may be made in the proportions Without departing from the principle of the invention. The forms may be somewhat modified. The tubes may be more tapered. They may be more nearly cylindrical. I believe the brush may be made successful without any taper of the tubes G H. The inner tube, G, maybe screw-threaded in its interior and screwed upon the nozzle A ,'the exterior of which may be previously formed with a corresponding screw-thread, or may be so formed at the time by the act of screwing on the tube G. The brush material may be any fibrous material, or even a sponge. I propose to try one or more tubes of soft rubber confined between the hard tubes G Hin the same manner as the bristles D.

Instead of the bottle-cap, I can secure some of the benefits of the invention by using the tubes G H and the brush material with a suitable reservoir, with a simple plane piece of metal to serve as a button or guard at the place of the cap A, or even without guard at that point.

I can make the tubes oval or ovoid instead of round. 7

I claim as my invention- 1. The bottle-cap A, formed with the rim A, and with both the ascending tube wand the descending-nozzle A in combination with the flexible bulb B, and with an annular brush, D G H, adapted to serve both as a fountain-brush and a bottle-cap, as herein specified.

2. The bottle-cap A, having the peripheral lip A, central perforated nozzle, A and annular lip A adapted to allow the strongly joining of the cap to the outer tube, H, by soldering to such lip A in combination with such outer tube, H, inner tube, G, and intermediate fibrous material, D, and with a means, B, for holding mucilage to be expressed into the brush at will, all adapted to serve with a bottle, as herein specified.

3. In combination with an elastic bulb, B, adapted to be filled by induction of fluid or semi-fluid through the central space, the inner tube, G, and outer tube, H, arranged, as shown, with the inner tube extending beyond the outer, so as to hold the brush open in the center and maintain a clear passage, as herein specified.

In testimony whereof I have hereunto set my, hand this 8th day of January, 1880, in the presence of two subscribing witnesses.

, JOHN B. DAVIDS.

Witnesses:

CHARLES C. STE'rsoN, THOMAS D. STETsoN. 

